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ADAU1702 Datasheet

SigmaDSP 28-56-Bit Audio Processor

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Data Sheet
SigmaDSP 28-/56-Bit Audio Processor
with Two ADCs and Four DACs
ADAU1702
FEATURES
28-/56-bit, 25 MIPS digital audio processor
2 ADCs: SNR of 100 dB, THD + N of −83 dB
4 DACs: SNR of 104 dB, THD + N of −90 dB
Complete standalone operation
Self-boot from serial EEPROM
Auxiliary ADC with 4-input mux for analog control
GPIOs for digital controls and outputs
Fully programmable with SigmaStudio graphical tool
28-bit × 28-bit multiplier with 56-bit accumulator for full
double precision processing
Clock oscillator for generating master clock from crystal
PLL for generating a master clock from 64 × fS, 256 × fS,
384 × fS, or 512 × fS clocks
Flexible serial data input/output ports with I2S-compatible,
left-justified, right-justified, and TDM modes
Sampling rates of up to 192 kHz are supported
On-chip voltage regulator for compatibility with 3.3 V systems
48-lead, plastic LQFP
APPLICATIONS
Multimedia speaker systems
MP3 player speaker docks
Automotive head units
Minicomponent stereos
Digital televisions
Studio monitors
Speaker crossovers
Musical instrument effects processors
In-seat sound systems (aircraft/motor coaches)
GENERAL DESCRIPTION
The ADAU1702 is a complete single-chip audio system with a
28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like
control interfaces. Signal processing includes equalization, cross-
over, bass enhancement, multiband dynamics processing, delay
compensation, speaker compensation, and stereo image widening.
This processing can be used to compensate for real-world
limitations of speakers, amplifiers, and listening environments,
providing dramatic improvements in perceived audio quality.
Its signal processing is comparable to that found in high end
studio equipment. Most processing is done in full 56-bit, double
precision mode, resulting in very good low level signal perfor-
mance. The ADAU1702 is a fully programmable DSP. The easy to
use SigmaStudio™ software allows the user to graphically configure
a custom signal processing flow using blocks such as biquad filters,
dynamics processors, level controls, and GPIO interface controls.
ADAU1702 programs can be loaded on power-up either from a
serial EEPROM through its own self-boot mechanism or from
an external microcontroller. On power-down, the current state
of the parameters can be written back to the EEPROM from the
ADAU1702 to be recalled the next time the program is run.
Two Σ-Δ ADCs and four Σ-Δ DACs provide a 98.5 dB analog
input to analog output dynamic. Each ADC has a THD + N of
−83 dB, and each DAC has a THD + N of −90 dB. Digital input
and output ports allow a glueless connection to additional
ADCs and DACs. The ADAU1702 communicates through an
I2C bus or a 4-wire SPI port.
Rev. D
Document Feedback
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responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2007–2016 Analog Devices, Inc. All rights reserved.
Technical Support
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Analog Devices Semiconductor Electronic Components Datasheet

ADAU1702 Datasheet

SigmaDSP 28-56-Bit Audio Processor

No Preview Available !

ADAU1702* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
View a parametric search of comparable parts
Evaluation Kits
• ADAU1701 Evaluation Board
Documentation
Application Notes
• AN-1006: Using the EVAL-ADUSB2EBZ
• AN-923: Designing a System Using the ADAU1701/
ADAU1702 in Self-Boot Mode
• AN-951: Using Hardware Controls with SigmaDSP GPIO
Pins
Data Sheet
• ADAU1702: SigmaDSP 28-/56-Bit Audio Processor with
Two ADCs and Four DACs Data Sheet
User Guides
• UG-072: Evaluation Board User Guide for ADAU1401
Software and Systems Requirements
• ADAU1701 Sound Audio System Linux Driver
• Firmware Loader for SigmaDSPs
Tools and Simulations
• SigmaDSP Processors: Software and Tools
Design Resources
• ADAU1702 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all ADAU1702 EngineerZone Discussions
Sample and Buy
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Technical Support
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number
* This page was dynamically generated by Analog Devices, Inc. and inserted into this data sheet. Note: Dynamic changes to
the content on this page does not constitute a change to the revision number of the product data sheet. This content may be
frequently modified.


Part Number ADAU1702
Description SigmaDSP 28-56-Bit Audio Processor
Maker Analog Devices
Total Page 30 Pages
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